CN102173026A - Novel heat conducting composite material and LED (light emitting diode) shell composite injection molding process - Google Patents
Novel heat conducting composite material and LED (light emitting diode) shell composite injection molding process Download PDFInfo
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- CN102173026A CN102173026A CN2010106087640A CN201010608764A CN102173026A CN 102173026 A CN102173026 A CN 102173026A CN 2010106087640 A CN2010106087640 A CN 2010106087640A CN 201010608764 A CN201010608764 A CN 201010608764A CN 102173026 A CN102173026 A CN 102173026A
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Abstract
The invention discloses a novel heat conducting composite material and an LED (light emitting diode) shell composite injection molding process. The process comprises the following steps of: A. raw material drying: weighing raw materials, and feeding the raw materials in a vacuum drier for vacuum drying; B. plasticizing: feeding the dried raw materials in the material cylinder of a screw rod type injection molding machine for plasticizing; C. putting an LED shell in a mold cavity of a closed mold of the screw rod type injection molding machine for injection molding; D. annealing: putting the LED shell obtained in the step C in an oven and standing still; and E. humidifying: putting the LED shell annealed in the step D in boiling water, and then taking out to obtain the finished product. The heat conducting composite material is injection-molded on the LED shell through injection molding process, thereby forming a plastic layer used as a radiator; as an insulating body, the radiator is safe to use, and the radiating property of the radiator is same as or even better than that of an aluminum radiator; and through the adoption of the injection molding process, the plastic radiator and the LED shell are combined more closely, and the process is simple and convenient.
Description
(1) technical field
The present invention relates to the compound Shooting Technique of a kind of heat-conductive composite material and LED housing.
(2) background technology
The LED lighting engineering is because its energy-saving advantages more and more becomes a kind of illumination trend.But also there is shortcoming in the LED lighting engineering, and promptly how heat dissipation problem because the heat that LED produces is bigger, therefore solves the key that heat dissipation problem becomes the development of LED lighting engineering when illumination.Generally all adopt Aluminium Radiator at present, its shortcoming that also exists is: aluminium is conductive material, causes that easily the electric current of LED lamp is scurried to Aluminium Radiator so security incident; Be connected trouble between Aluminium Radiator and the LED housing, and bonding strength is not strong yet.
(3) summary of the invention
In order to overcome the above-mentioned deficiency that existing LED adopts Aluminium Radiator, the invention provides the compound Shooting Technique of a kind of novel heat-conductive composite material and LED housing.
The technical scheme that the present invention solves its technical problem is: the compound Shooting Technique of a kind of novel heat-conductive composite material and LED housing comprises the following steps:
A. raw material drying: take by weighing raw material, raw material is dropped into carry out vacuum drying in the vacuum drier, the water content of raw material is reduced to below 0.2%;
Consisting of of raw material wherein:
Polyhexamethylene adipamide: 46～91 weight portions,
Graphite: 5～25 weight portions,
Molybdenum bisuphide: 2～10 weight portions,
Nano-calcium carbonate: 0.5～2 weight portion,
Glass fibre: 2～15 weight portions,
Coupling agent: 0.5～5 weight portion,
Antioxidant: 1～2 weight portion,
Lubricant: 0.5～2 weight portion;
B. plasticizing: dried raw material is dropped in the barrel of screw injection molding machine and plastify, make raw material become the heat-conductive composite material melt of molten condition, the temperature of barrel is 200 ℃～230 ℃, and the plasticizing back pressure is 2Mpa～6Mpa;
C. the LED housing is positioned in the die cavity of close die of screw injection molding machine, the temperature of close die is 70 ℃～90 ℃, heat-conductive composite material melt after the step B plasticizing is injected the die cavity of described close die, the heat-conductive composite material melt is full of cooling and shaping behind the die cavity, the heat-conductive composite material melt is injected on the LED housing, and die sinking gets the LED shell products;
D. annealing: the LED shell products that makes among the step C is put into baking oven left standstill 6～8 hours, temperature of oven remains on 90 ℃～100 ℃;
E. damping: the LED shell products after annealing among the step D is put into boiling water, get finished product after taking out again.
Being recommended in the steps A, the vacuum in the vacuum drier is-94kpa～-70Kpa, vacuum drying temperature is 90 ℃～100 ℃, the vacuum drying time is 8 hours～12 hours.
Be recommended among the step C, the heat-conductive composite material melt injects the die cavity of close die successively through nozzle, runner and cast gate, and injection pressure is 95Mpa～150Mpa.
Be recommended in the steps A the consisting of of raw material:
Polyhexamethylene adipamide: 91 weight portions,
Graphite: 6 weight portions,
Molybdenum bisuphide: 2 weight portions,
Nano-calcium carbonate: 1 weight portion,
Glass fibre: 2 weight portions,
Coupling agent: 0.5 weight portion,
Antioxidant: 1 weight portion,
Lubricant: 0.5 weight portion;
Wherein, coupling agent is silane coupler or titanate coupling agent or aluminate coupling agent, and antioxidant is antioxidant 1010 or antioxidant BHT or antioxidant BHA, and lubricant is stearic acid or butyl stearate or oleamide or ethylene bis stearamide.
Beneficial effect of the present invention is: by Shooting Technique heat-conductive composite material is injected on the LED housing, thereby forms one deck plastics as radiator, it is an insulator, therefore use safer, very nearly the same even better with Aluminium Radiator on heat dispersion; Adopt Shooting Technique to make plastic tank radiators tightr, and technology is easy with combining of LED housing.
(4) specific embodiment
Below in conjunction with the specific embodiment the present invention is described in further detail.
Embodiment one
The compound Shooting Technique of a kind of novel heat-conductive composite material and LED housing comprises the following steps:
A. raw material drying: take by weighing raw material, raw material is dropped into carry out vacuum drying in the vacuum drier, the water content of raw material is reduced to below 0.2%; The interior vacuum of vacuum drier is-75Kpa in the present embodiment, and vacuum drying temperature is 90 ℃～100 ℃, and the vacuum drying time is 11 hours;
Consisting of of raw material wherein:
Polyhexamethylene adipamide: 91 weight portions,
Graphite: 6 weight portions,
Molybdenum bisuphide: 2 weight portions,
Nano-calcium carbonate: 1 weight portion,
Glass fibre: 2 weight portions,
Silane coupler as coupling agent: 0.5 weight portion,
Antioxidant BHT as antioxidant: 1 weight portion,
Oleamide as lubricant: 0.5 weight portion;
B. plasticizing: dried raw material is dropped in the barrel of screw injection molding machine and plastify, make raw material become the heat-conductive composite material melt of molten condition, the temperature of barrel is 200 ℃～230 ℃ (can't accurately be controlled at certain temperature spot with the temperature of barrel, the temperature of barrel is controlled in 200 ℃～230 ℃ scopes gets final product), the plasticizing back pressure is 3.5Mpa;
C. the LED housing is positioned in the die cavity of close die of screw injection molding machine, the temperature of close die is 70 ℃～90 ℃, heat-conductive composite material melt after the step B plasticizing is injected the die cavity of described close die:, the heat-conductive composite material melt injects the die cavity of close die successively through nozzle, runner and cast gate, injection pressure is 120Mpa.
The heat-conductive composite material melt is full of cooling and shaping behind the die cavity, and the heat-conductive composite material melt is injected on the LED housing, and die sinking gets the LED shell products;
D. annealing: the LED shell products that makes among the step C is put into baking oven left standstill 7 hours, temperature of oven remains on 90 ℃～100 ℃;
E. damping: the LED shell products after annealing among the step D is put into boiling water, get finished product after taking out again.
Embodiment two
The compound Shooting Technique of a kind of novel heat-conductive composite material and LED housing comprises the following steps:
A. raw material drying: take by weighing raw material, raw material is dropped into carry out vacuum drying in the vacuum drier, the water content of raw material is reduced to below 0.2%; The interior vacuum of vacuum drier is-94Kpa in the present embodiment, and vacuum drying temperature is 90 ℃～100 ℃, and the vacuum drying time is 9 hours;
Consisting of of raw material wherein:
Polyhexamethylene adipamide: 50 weight portions,
Graphite: 5 weight portions,
Molybdenum bisuphide: 10 weight portions,
Nano-calcium carbonate: 0.7 weight portion,
Glass fibre: 15 weight portions,
Titanate coupling agent as coupling agent: 3 weight portions,
Antioxidant 1010 as antioxidant: 1.2 weight portions,
Stearic acid as lubricant: 0.8 weight portion;
B. plasticizing: dried raw material is dropped in the barrel of screw injection molding machine and plastify, make raw material become the heat-conductive composite material melt of molten condition, the temperature of barrel is 200 ℃～230 ℃ (can't accurately be controlled at certain temperature spot with the temperature of barrel, the temperature of barrel is controlled in 200 ℃～230 ℃ scopes gets final product), the plasticizing back pressure is 2Mpa;
C. the LED housing is positioned in the die cavity of close die of screw injection molding machine, the temperature of close die is 70 ℃～90 ℃, heat-conductive composite material melt after the step B plasticizing is injected the die cavity of described close die:, the heat-conductive composite material melt injects the die cavity of close die successively through nozzle, runner and cast gate, injection pressure is 100Mpa.
The heat-conductive composite material melt is full of cooling and shaping behind the die cavity, and the heat-conductive composite material melt is injected on the LED housing, and die sinking gets the LED shell products;
D. annealing: the LED shell products that makes among the step C is put into baking oven left standstill 6 hours, temperature of oven remains on 90 ℃～100 ℃;
E. damping: the LED shell products after annealing among the step D is put into boiling water, get finished product after taking out again.
Embodiment three
The compound Shooting Technique of a kind of novel heat-conductive composite material and LED housing comprises the following steps:
A. raw material drying: take by weighing raw material, raw material is dropped into carry out vacuum drying in the vacuum drier, the water content of raw material is reduced to below 0.2%; The interior vacuum of vacuum drier is-90Kpa in the present embodiment, and vacuum drying temperature is 90 ℃～100 ℃, and the vacuum drying time is 10 hours;
Consisting of of raw material wherein:
Polyhexamethylene adipamide: 46 weight portions,
Graphite: 10 weight portions,
Molybdenum bisuphide: 8 weight portions,
Nano-calcium carbonate: 0.5 weight portion,
Glass fibre: 10 weight portions,
Aluminate coupling agent as coupling agent: 2 weight portions,
As the antioxidant BHA:1.5 weight portion of antioxidant,
Butyl stearate as lubricant: 1.5 weight portions;
B. plasticizing: dried raw material is dropped in the barrel of screw injection molding machine and plastify, make raw material become the heat-conductive composite material melt of molten condition, the temperature of barrel is 200 ℃～230 ℃ (can't accurately be controlled at certain temperature spot with the temperature of barrel, the temperature of barrel is controlled in 200 ℃～230 ℃ scopes gets final product), the plasticizing back pressure is 4Mpa;
C. the LED housing is positioned in the die cavity of close die of screw injection molding machine, the temperature of close die is 70 ℃～90 ℃, heat-conductive composite material melt after the step B plasticizing is injected the die cavity of described close die:, the heat-conductive composite material melt injects the die cavity of close die successively through nozzle, runner and cast gate, injection pressure is 95Mpa.
The heat-conductive composite material melt is full of cooling and shaping behind the die cavity, and the heat-conductive composite material melt is injected on the LED housing, and die sinking gets the LED shell products;
D. annealing: the LED shell products that makes among the step C is put into baking oven left standstill 8 hours, temperature of oven remains on 90 ℃～100 ℃;
E. damping: the LED shell products after annealing among the step D is put into boiling water, get finished product after taking out again.
Embodiment four
The compound Shooting Technique of a kind of novel heat-conductive composite material and LED housing comprises the following steps:
A. raw material drying: take by weighing raw material, raw material is dropped into carry out vacuum drying in the vacuum drier, the water content of raw material is reduced to below 0.2%; The interior vacuum of vacuum drier is-90Kpa in the present embodiment, and vacuum drying temperature is 90 ℃～100 ℃, and the vacuum drying time is 8 hours;
Consisting of of raw material wherein:
Polyhexamethylene adipamide: 60 weight portions,
Graphite: 25 weight portions,
Molybdenum bisuphide: 4 weight portions,
Nano-calcium carbonate: 2 weight portions,
Glass fibre: 8 weight portions,
Silane coupler as coupling agent: 5 weight portions,
Antioxidant BHT as antioxidant: 2 weight portions,
Ethylene bis stearamide as lubricant: 2 weight portions;
B. plasticizing: dried raw material is dropped in the barrel of screw injection molding machine and plastify, make raw material become the heat-conductive composite material melt of molten condition, the temperature of barrel is 200 ℃～230 ℃ (can't accurately be controlled at certain temperature spot with the temperature of barrel, the temperature of barrel is controlled in 200 ℃～230 ℃ scopes gets final product), the plasticizing back pressure is 6Mpa;
C. the LED housing is positioned in the die cavity of close die of screw injection molding machine, the temperature of close die is 70 ℃～90 ℃, heat-conductive composite material melt after the step B plasticizing is injected the die cavity of described close die:, the heat-conductive composite material melt injects the die cavity of close die successively through nozzle, runner and cast gate, injection pressure is 150Mpa.
The heat-conductive composite material melt is full of cooling and shaping behind the die cavity, and the heat-conductive composite material melt is injected on the LED housing, and die sinking gets the LED shell products;
D. annealing: the LED shell products that makes among the step C is put into baking oven left standstill 8 hours, temperature of oven remains on 90 ℃～100 ℃;
E. damping: the LED shell products after annealing among the step D is put into boiling water, get finished product after taking out again.
Embodiment five
The compound Shooting Technique of a kind of novel heat-conductive composite material and LED housing comprises the following steps:
A. raw material drying: take by weighing raw material, raw material is dropped into carry out vacuum drying in the vacuum drier, the water content of raw material is reduced to below 0.2%; The interior vacuum of vacuum drier is-80Kpa in the present embodiment, and vacuum drying temperature is 90 ℃～100 ℃, and the vacuum drying time is 11 hours;
Consisting of of raw material wherein:
Polyhexamethylene adipamide: 75 weight portions,
Graphite: 20 weight portions,
Molybdenum bisuphide: 5 weight portions,
Nano-calcium carbonate: 1.5 weight portions,
Glass fibre: 5 weight portions,
Silane coupler as coupling agent: 1.5 weight portions,
Antioxidant BHT as antioxidant: 1.3 weight portions,
Stearic acid as lubricant: 1.8 weight portions;
B. plasticizing: dried raw material is dropped in the barrel of screw injection molding machine and plastify, make raw material become the heat-conductive composite material melt of molten condition, the temperature of barrel is 200 ℃～230 ℃ (can't accurately be controlled at certain temperature spot with the temperature of barrel, the temperature of barrel is controlled in 200 ℃～230 ℃ scopes gets final product), the plasticizing back pressure is 3Mpa;
C. the LED housing is positioned in the die cavity of close die of screw injection molding machine, the temperature of close die is 70 ℃～90 ℃, heat-conductive composite material melt after the step B plasticizing is injected the die cavity of described close die:, the heat-conductive composite material melt injects the die cavity of close die successively through nozzle, runner and cast gate, injection pressure is 110Mpa.
The heat-conductive composite material melt is full of cooling and shaping behind the die cavity, and the heat-conductive composite material melt is injected on the LED housing, and die sinking gets the LED shell products;
D. annealing: the LED shell products that makes among the step C is put into baking oven left standstill 7 hours, temperature of oven remains on 90 ℃～100 ℃;
E. damping: the LED shell products after annealing among the step D is put into boiling water, get finished product after taking out again.
Embodiment six
The compound Shooting Technique of a kind of novel heat-conductive composite material and LED housing comprises the following steps:
A. raw material drying: take by weighing raw material, raw material is dropped into carry out vacuum drying in the vacuum drier, the water content of raw material is reduced to below 0.2%; The interior vacuum of vacuum drier is-85Kpa in the present embodiment, and vacuum drying temperature is 90 ℃～100 ℃, and the vacuum drying time is 10 hours;
Consisting of of raw material wherein:
Polyhexamethylene adipamide: 80 weight portions,
Graphite: 16 weight portions,
Molybdenum bisuphide: 7 weight portions,
Nano-calcium carbonate: 0.8 weight portion,
Glass fibre: 13 weight portions,
Titanate coupling agent as coupling agent: 1 weight portion,
As the antioxidant BHA:1.7 weight portion of antioxidant,
Butyl stearate as lubricant: 0.7 weight portion;
B. plasticizing: dried raw material is dropped in the barrel of screw injection molding machine and plastify, make raw material become the heat-conductive composite material melt of molten condition, the temperature of barrel is 200 ℃～230 ℃ (can't accurately be controlled at certain temperature spot with the temperature of barrel, the temperature of barrel is controlled in 200 ℃～230 ℃ scopes gets final product), the plasticizing back pressure is 5Mpa;
C. the LED housing is positioned in the die cavity of close die of screw injection molding machine, the temperature of close die is 70 ℃～90 ℃, heat-conductive composite material melt after the step B plasticizing is injected the die cavity of described close die:, the heat-conductive composite material melt injects the die cavity of close die successively through nozzle, runner and cast gate, injection pressure is 140Mpa.
The heat-conductive composite material melt is full of cooling and shaping behind the die cavity, and the heat-conductive composite material melt is injected on the LED housing, and die sinking gets the LED shell products;
D. annealing: the LED shell products that makes among the step C is put into baking oven left standstill 6 hours, temperature of oven remains on 90 ℃～100 ℃;
E. damping: the LED shell products after annealing among the step D is put into boiling water, get finished product after taking out again.
Claims (5)
1. the compound Shooting Technique of novel heat-conductive composite material and LED housing is characterized in that comprising the following steps:
A. raw material drying: take by weighing raw material, raw material is dropped into carry out vacuum drying in the vacuum drier, the water content of raw material is reduced to below 0.2%;
Consisting of of raw material wherein:
Polyhexamethylene adipamide: 46～91 weight portions,
Graphite: 5～25 weight portions,
Molybdenum bisuphide: 2～10 weight portions,
Nano-calcium carbonate: 0.5～2 weight portion,
Glass fibre: 2～15 weight portions,
Coupling agent: 0.5～5 weight portion,
Antioxidant: 1～2 weight portion,
Lubricant: 0.5～2 weight portion;
B. plasticizing: dried raw material is dropped in the barrel of screw injection molding machine and plastify, make raw material become the heat-conductive composite material melt of molten condition, the temperature of barrel is 200 ℃～230 ℃, and the plasticizing back pressure is 2Mpa～6Mpa;
C. the LED housing is positioned in the die cavity of close die of screw injection molding machine, the temperature of close die is 70 ℃～90 ℃, heat-conductive composite material melt after the step B plasticizing is injected the die cavity of described close die, the heat-conductive composite material melt is full of cooling and shaping behind the die cavity, the heat-conductive composite material melt is injected on the LED housing, and die sinking gets the LED shell products;
D. annealing: the LED shell products that makes among the step C is put into baking oven left standstill 6～8 hours, temperature of oven remains on 90 ℃～100 ℃;
E. damping: the LED shell products after annealing among the step D is put into boiling water, get finished product after taking out again.
2. the compound Shooting Technique of novel heat-conductive composite material as claimed in claim 1 and LED housing, it is characterized in that: in steps A, vacuum in the vacuum drier is-94kpa～-70Kpa, vacuum drying temperature is 90 ℃～100 ℃, the vacuum drying time is 8 hours～12 hours.
3. the compound Shooting Technique of novel heat-conductive composite material as claimed in claim 1 or 2 and LED housing, it is characterized in that: in step C, the heat-conductive composite material melt injects the die cavity of close die successively through nozzle, runner and cast gate, injection pressure is 95Mpa～150Mpa.
4. the compound Shooting Technique of novel heat-conductive composite material as claimed in claim 1 or 2 and LED housing is characterized in that: in steps A, and the consisting of of raw material:
Polyhexamethylene adipamide: 91 weight portions,
Graphite: 6 weight portions,
Molybdenum bisuphide: 2 weight portions,
Nano-calcium carbonate: 1 weight portion,
Glass fibre: 2 weight portions,
Coupling agent: 0.5 weight portion,
Antioxidant: 1 weight portion,
Lubricant: 0.5 weight portion;
Wherein, coupling agent is silane coupler or titanate coupling agent or aluminate coupling agent, and antioxidant is antioxidant 1010 or antioxidant BHT or antioxidant BHA, and lubricant is stearic acid or butyl stearate or oleamide or ethylene bis stearamide.
5. the compound Shooting Technique of novel heat-conductive composite material as claimed in claim 3 and LED housing is characterized in that: in steps A, and the consisting of of raw material:
Polyhexamethylene adipamide: 91 weight portions,
Graphite: 6 weight portions,
Molybdenum bisuphide: 2 weight portions,
Nano-calcium carbonate: 1 weight portion,
Glass fibre: 2 weight portions,
Coupling agent: 0.5 weight portion,
Antioxidant: 1 weight portion,
Lubricant: 0.5 weight portion;
Wherein, coupling agent is silane coupler or titanate coupling agent or aluminate coupling agent, and antioxidant is antioxidant 1010 or antioxidant BHT or antioxidant BHA, and lubricant is stearic acid or butyl stearate or oleamide or ethylene bis stearamide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201010608764.0A CN102173026B (en) | 2010-12-16 | 2010-12-16 | Novel heat conducting composite material and LED (light emitting diode) shell composite injection molding process |
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| CN201010608764.0A CN102173026B (en) | 2010-12-16 | 2010-12-16 | Novel heat conducting composite material and LED (light emitting diode) shell composite injection molding process |
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| CN102173026B CN102173026B (en) | 2015-01-14 |
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| CN103342891A (en) * | 2013-07-03 | 2013-10-09 | 徐常威 | High-performance flame-retardant heat-conductive plastic material and preparation method thereof |
| CN104227915A (en) * | 2014-07-24 | 2014-12-24 | 镇江洋溢汽车部件有限公司 | Plastic shell manufacturing technique |
| CN104497542A (en) * | 2014-12-08 | 2015-04-08 | 国家电网公司 | Preparation process of power capacitor shell |
| CN105037866A (en) * | 2015-04-28 | 2015-11-11 | 桐城市新丰彩印包装有限公司 | Degradable thin film preparation process |
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| CN103342891A (en) * | 2013-07-03 | 2013-10-09 | 徐常威 | High-performance flame-retardant heat-conductive plastic material and preparation method thereof |
| CN103342891B (en) * | 2013-07-03 | 2015-08-12 | 中山市永威新材料有限公司 | Heat conductive plastic material of a kind of high-performance refractory and preparation method thereof |
| CN104227915A (en) * | 2014-07-24 | 2014-12-24 | 镇江洋溢汽车部件有限公司 | Plastic shell manufacturing technique |
| CN104497542A (en) * | 2014-12-08 | 2015-04-08 | 国家电网公司 | Preparation process of power capacitor shell |
| CN105037866A (en) * | 2015-04-28 | 2015-11-11 | 桐城市新丰彩印包装有限公司 | Degradable thin film preparation process |
| CN105419322A (en) * | 2015-12-08 | 2016-03-23 | 安徽天瑞塑业有限公司 | Nylon abrasive filament and manufacturing method thereof |
| CN105838065A (en) * | 2016-04-29 | 2016-08-10 | 安徽安缆模具有限公司 | Antistatic polyamide mold material and preparing method thereof |
| CN105820564A (en) * | 2016-04-29 | 2016-08-03 | 安徽安缆模具有限公司 | Silane modified nylon mould material and preparation method thereof |
| CN105802211A (en) * | 2016-04-29 | 2016-07-27 | 安徽安缆模具有限公司 | Lithium ion intercalated molybdenum disulfide reinforced nylon mold material and preparation method thereof |
| CN105860518A (en) * | 2016-04-29 | 2016-08-17 | 安徽安缆模具有限公司 | Molybdenum-disulfide-modified nylon mold and preparation method thereof |
| CN105907089A (en) * | 2016-04-29 | 2016-08-31 | 安徽安缆模具有限公司 | Anti-corrosion and anti-bacteria nylon mold material and preparation method thereof |
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| CN106046775A (en) * | 2016-06-06 | 2016-10-26 | 淮南曹庵润龙塑业有限公司 | Easily molding nylon mold material and preparation method thereof |
| CN106084765A (en) * | 2016-06-06 | 2016-11-09 | 淮南曹庵润龙塑业有限公司 | A kind of fire-retardant nylon mold materials and preparation method thereof |
| CN113146927A (en) * | 2020-11-23 | 2021-07-23 | 太仓丹妮尔模塑汽配有限公司 | Pressurizing rapid injection molding process for anti-static household appliance structural part |
| CN112571715A (en) * | 2020-12-18 | 2021-03-30 | 昆山市杰尔电子科技股份有限公司 | Environment-friendly forming process for notebook computer shell |
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